Electric heater.



J, E. MAGOMBER. ELECTRIC HEATER. 'APPLIOA TIOH FILED APB. 24,1909.

Patented Aug. 10, 1909.

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m 0 as as? haven m1 m1 HEEEEE J. E. MACOMBER. ELECTRIC HEATER.APPLICATION FILED APE. 24,1909.

Patented Aug. 10, 1909.

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UNlTED STATES PATENT OFFICE.

JOHN E. MAGOMBER, OF ALBANY, NEW YORK, ASSIGNOR TO CONSOLIDATED CARHEATING COMPANY, OF ALBANY, NEW YORK, A CORPORATION OF WEST VIRGINIA.

ELECTRIC HEATER. I

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Specification of Letters Patent.

Patented Aug. 10, 1909.

Application filed April 24, 1909. Serial No. 492,089.

To all whom it may concern:

lie it known that I, J'onN E. Macoimnn, a citizen of the United States,residing at Albany, county of Albany, State of New York, have. inventedcertain new and useful Improvements in Electric .lleaters, the followingbeing a full, clear. and exact. disclosure of one form of my inventionwhich 1 at present deem preferable.

My invention relates to electric heaters, and particularly those adaptedfor use on electric cars and similar vehicles, although they are notconlined to such use but may be employed whenever it is desired toproduce heat by means of an electric current.

The object of my invention is to provide a more simplified constructionwhich is not only less expensive and less diliicult to manufacture, butwhich also will protect all of the conductors, and especially theleadingin wires so that they cannot come in contact with external partswhile at the same time such conductors are made easily accessible so asto tie inspected or adjusted it an occasion requires.

For a detailed description of the present form of my invention,reference may be had to the following specification and to theaccompanying drawings forming a part there:

oi', in which Figure l is a side view in elevation, showing one of myimproved heaters, parts there of being broken away to show the interiorof the construct-ion;-l"ig. 2 is a longitudinal sectional view takensubstantially on the line A, A Fig. 1, showing the case of the heaterbroken away: Fig. 3 is an end view of the heater? Fig. 4 is aperspective view of the end of the heater separated from tin main bodyof the heater itself and showing the manner of attaching the end casingto the longitudinal casing, and also showing the manncrfof forming thejunctionboxes; Fig. 5 is a perspective view of a strap for holding theconduit lior carrying the elec ric conductors or connectors, in positionin relation to the casing of the heater; Fig. 6

is a plan view of the end plate of the heater casing proper, and Fig. 7is a plan view of the plate which forms the casing for the junction box.

Referring to the drawings, the numeral 1 indicates the core, usually ofporcelain, which supports the helically coiled wire heatihg conductors2;:the numeral 3 indicates the thereof through which the connectingbolts 7 pass. The inner end of these bolts connect with the heatingcoils 3 and their outer ends connect with the conducting wires 8 and areheld in position relative thereto by the nuts 9. The stems 3 passthrough the plates 10 which form the ends of the heater casing and areheld in position relative thereto so that the cores and heating coilsare definitely locatcd within the casing, by means of nuts 11.

The plates 10 are provided with laterally extending tongues 13, adaptedto pass through slots 1% in the curved back casing 15 of the heater, andthese tongues may be bent down at right angles so as to hold the casingin position relative to the end-plates 10. The parts thus described arepreferably ZISSOKIL bled in the order mentioned. The plates 10 are alsoprovided with perforated cars 16, by which the heater may be attached toand supported upon the perforated supporting plate 17 of the heaterproper, as indicated by the numeral 18 in Figs. 1, 2 and 3. The conduitsfor the connecting wires are then attached to the back casing 15 bymeans of straps or clamps 19, shown in Fig. These strapsare providedatone end with notches 20, forming a T -head 21. which may be insertedin a' slot 22. formed in the back casing 15. This slot. extendscircumfercntially of said casing, and when the T-head 21 of the strap isinserted therein,-the latter is turned at right angles, thereby lockingthe end of the strap in position. The opposite end of the strap issecured to the casing by means of a screw or bolt 23. In this manner theconduit 24: is held firmly in position on the end of the heater. Theconducting wires 8 having been passed through the conduit 24, their endsare secured to the respective bolts 7. These connecting parts are thencovered by a protecting plate 25, shown in Fig. 7, which forms ajunction box on the end of thehca-ter. The plate 25 is provided with arecess 26 which engages the conduit 24-, and with two holes 27, throughwhich the ends of the stems or llO The advantages of my improvementswill be apparent to one skilled in the art, Witnout' specificenumeration of them.

Having described this form ot ny invention, what I claim and desire toprotect by Letters Patent is:

1. In an electric heater, a casing having transverse end plate and anauxiliary plate superposed. thereon and forming a junction box with saidend plate and easing.

2. In an electric heater, a longitudinal casing, a transverse end plate,tongue and slot connections between said plate and casing, and anauxiliary plate superposed on said end plate and tornnng therewith a unction box.

in an electric heater, a ongitudinal casing, an end plate situated Wihinthe same, and an auxiliary plate having a pen tion resting on the end oisaid casing and a portion sunk below the same and forming With said endplate a junction box.

at. In an electric heater, a semi-cylindrical longitudinal using, an endplate situated within the same, and an an; liary plate having a part ofits margin resting on the central portion or the end of sa' l casing,and the remainder thereol sunh below said end and forming with said endplate a junction box.

5. In an electric heater, semi-cylindrical back plate, a plain frontplate, an end plate situated Within the end oi said back plate, and anauxiliary plate superposed on said end plate and forming a junction boxtherewith. H

6. In an electric heater, a se1ni-cylindrical back plate, a plain frontplate, an end plate situated with n the end of said back plate, tongueand slot connections between said end and back plates, and means forrigidly connecting said end and front plates.

7. In an electric heater, a semi-cylindrical back plate, a plain frontplate, an end plate situated Within the end of said back plate,

attaching said front plateto said end plate.

8. In an electric heater, a semi-cylindrical casing, astrap engaging thesame interior-1y, and a conduit held in position on said plate by saidstrap.

9. ln an electric heater, a bent back plate,

s so to bring the a stl hp engaging the same interiorly, an end platesituated Within the end said plate, an auxiliary plate hax 'inp,- anedge resting on the end of said bacl: plate adjacent said strap andprovided with a recess having a shape corresponding to said strap, suitauxiliary plate raving its opposite edge resting on said end plate.

10. in an electric heater, a longitudinal core, electric heating devicesthereon, a "tour extending from said core, a bent longitudinal backplate, an end plate situated Within the end of Said bacl: plate and engaa said stem, and an auxiliary plate superposed on said end plate andheld in position on said stein.

11. In an electric heater, a longitudinal core, electric heating devicescarried thereon, a stem extending from. suit. core, a semicylindricalback plate, an end plate situated Within said back plate and the end oithrough which said stein passes, a nut on said stein for holding saidcore in position, anauxiliary plate superposed on said end plate andtl'lrough which said stein passes, and a second out on said stein forholding said auxiliary plate in position thereon.

12. in an electric'heater, a longitudinal core olcctric heating devicescarried thereon, a stein exteniling from said core, a sen: cylindricalback plate, an end plate situated within the end of said back plate andthrough which said stein a nut on said stein for holding said. core inposition, an auxiliary plate superposed on said end plate and having oneei'lg'e resting on the end of said back plate, a conduit passing throughsaid auxiliary plate and attached to said back plate, said auxiliaryplate having one edge resting on said end plate and a nut on said steinfor holding said auxiliary plate in position.

13. in an electric heater,. a casing; containing heating coils, a plate"external to said casing forming with the end plate of the casing a uncton box, an insulated term nal entering l unction box from the casing,and an ext rnal conduit for the leading-in wire entering said junction.box andsecured to the casing independently of said external plate.

let. in an electric heater, a casing contain ing two heating coils, ajunction atone end of said car-m o. aconduitentering said junction boxbut secured to the casing independently of said box and two Wires pasing through said conduit into the unction box and there connectedrespectively to the two insulated terminals of the coils.

15. In an electric heater, a casing containin;;- heating coi anexternal. detachable plate liorminpw ith the end plate of the cas ingr ajunction box, a conduit entering" said box and secured to the casingindependently of said external plate, and an insulated coililiary endplate forming a junction box, a

In witness whereof I have hereunto set my hand, before two subscribingWitnesses, this 10 15th day of April, 1909.

JOHN E. MACOMBER.

terminal in said box adapted to receive a leading-in wire in saidconduit.

16. In an electric heater the combination with a casing, an end platethereon, an auX- Y. heater c011 1n the casing and a supporting ltnesseszrod for the heater extending through both C. C. NUcnoLs, end plates andsecuring the same. JAMES F, MoELRoY.

